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Johann Dobereiner placed elements with similar properties in to groups of threes called what?
Johann Dobereiner grouped elements with similar properties into triads. In these triads, he observed that the properties of the middle element were the average of the other two.
What is the contribution of Dobereiner to the periodic table?
He provided the base for the classification of elements he says the elements are atomic masses nearly same he arranged the atomic masses of the middle element is approximately the arithmetic mean of other two elements,He first gave us the ''Law of Triads''...where he made lists of three elements each, and showed that the mass of the middle element is approximately equal to the average mass of the other two elements.
What did Johann dobreiner do for the periodic table?
Dobereiner classified elements into groups of three. He introduced law of triads according to this law every element which comes in the middle of such a group has atomic mass equal to average of the atomic masses of first and third element. for example Lithium(Li) 7 Sodium(Na) 21 Potassium(K) 39
What periodic trends did Mendeleev organize his periodic table by?
Mendeleev organized his periodic table by atomic mass and similar chemical properties of elements to recognize patterns and trends. He arranged the elements in horizontal rows and vertical columns based on these properties, allowing him to predict the properties of undiscovered elements.
Who was Dobereiner?
johann dobereiner had contributed towards the base of the periodic table and discovered that the elements shared similiar properties because there always was three elementzs in three groups that he later refered to as Triads.
Who arranged atom in the form of triads'?
Johann Wolfgang Dobereiner,a German chemist arranged atom in the form of triads in 1817.
What are dobereiner's triads defect?
the main defect of' dobereiner's triads is that he put the chemically dissimilar elements in the same triads (dahal.ramchandra@gmail.com)
How did Dmitri Menedeleyev arrange elements on his first periodic table?
Dmitri Mendeleev arranged elements on his first periodic table by increasing atomic mass and grouping elements with similar properties together. He left gaps for missing elements and predicted the properties of these undiscovered elements based on their position in the table.
What scientist published the first periodic table and how was it arranged?
In 1817, Döbereiner began to formulate one of the earliest attempts to classify the elements. He found that some elements formed groups of three with related properties. He termed these groups "triads". In all of the triads, the atomic weight of the second element was almost exactly the average of the atomic weights of the first and third element..
Johann Dobereiner placed elements with similar properties in to groups of threes called what?
Johann Dobereiner grouped elements with similar properties into triads. In these triads, he observed that the properties of the middle element were the average of the other two.
What is the limitations of dobereiner's classifications?
Dobereiner's classification system had limitations because it only grouped elements based on triads and did not account for all known elements at the time. Additionally, the system did not explain why elements within triads had similar chemical properties. It was also limited by its inability to accommodate elements that did not fit neatly into triads.
What is the contribution of Dobereiner to the periodic table?
He provided the base for the classification of elements he says the elements are atomic masses nearly same he arranged the atomic masses of the middle element is approximately the arithmetic mean of other two elements,He first gave us the ''Law of Triads''...where he made lists of three elements each, and showed that the mass of the middle element is approximately equal to the average mass of the other two elements.
Did dobereiners triads also exist in the columns newlards octaves?
No, Dobereiner's triads were a set of three elements with similar properties where the atomic mass of the middle element was approximately the average of the other two. Newlands' Octaves, on the other hand, arranged elements in rows of seven, where every eighth element showed similar properties. These two classification schemes were different from each other.
What did Johann dobreiner do for the periodic table?
Dobereiner classified elements into groups of three. He introduced law of triads according to this law every element which comes in the middle of such a group has atomic mass equal to average of the atomic masses of first and third element. for example Lithium(Li) 7 Sodium(Na) 21 Potassium(K) 39
What are the merits and demerits of dobereiner law of triads?
The merit of Dobereiner's Law of Triads is that it recognized patterns in chemical properties of certain elements and grouped them together based on similarities. However, a major demerit is that it was limited in its application and only applied to a few elements, making it less useful as more elements were discovered that did not fit into triads.
What limitation of Johann Dobereiner in periodic table?
Dobereiner gave triads for few elements. It could not be applied to other elements.So it was not considered further.
What resulted from the first experimental effort that established the idea of groups of elements?
Dmitri Mendeleev's first experimental effort in organizing elements into groups resulted in the periodic table of elements. His table arranged elements in order of increasing atomic mass, with elements exhibiting similar properties grouped together. This laid the foundation for our modern understanding of the periodicity of chemical elements.
